Hi,
From the description of the problem, the flywheel could be seated too far away from the starter.
Is the flywheel from the original engine or comes with the 1993 engine?
Were all the starters that went bad, of the same specification? For Toyota engine, starters have different spout length depending on which vehicle it came from.
From the seating area of the starter, measure the distance to the flywheel ring gears and compare with that of the original engine to see if they are the same.
Let us know how it goes.
Thursday, March 18th, 2021 AT 9:43 AM